The Hakko FR-820 is a compact and low cost solution to preheating printed circuit boards. The design of the FR-820 delivers consistent heat to the bottom of printed circuit boards and is particularly beneficial when soldering lead-free assemblies. Closed loop temperature control allows the output air temperature to be set anywhere between 150º - 300º C (302º - 572ºF). An optional Extension Pipe (B3263) extends the airflow an additional 27mm (1.1 in.). The FR-820 has a port that allows it to be activated by an optional hand switch (B2763) or foot switch (B1649).